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| - | {{Tabs}}
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| - | ===== Overview =====
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| - | [[File:Grimage10GE.png|200px|thumb|right|Grimage 10GE network]]
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| - | ; '''Update 2015-08'''
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| - | * grimage-9 is now equiped with a Nvidia K40c GPU (thanks to Nvidia/Inria-GRA partnership).
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| - | * grimage-10 is now equiped with 2 Nvidia Geforce 295, which makes it a 4 GPU machine.
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| - | ; '''Update 2015-06'''
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| - | The grimage machine room is shut down. As a result, grimage-1 to grimage-8 are shutdown as well, with no plan to be up again soon.
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| - | Grimage-9 and grimage-10 (hosted in the cluster machine room along with other machines of Digitalis/Grid'5000) are still available.
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| - | ; '''Update 2014-05'''
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| - | Intel 10GE cards are removed from the nodes to be used in the ppol nodes.
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| - | The Grimage cluster was originally dedicated to support the Grimage VR platform: handle hardware (cameras, etc) and process data (videos captures, etc).
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| - | More recently, 10GE ethernet cards were added to some nodes for a new project, making the cluster a mutualized platform (multi-project). Currently, at least 4 projects are using the cluster, requiring a resource management system and deployment system adapted to an experimental platform, just like Grid'5000.
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| - | Grimage nodes have big computer cases (4U), with the purpose of being able to host various hardware.
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| - | ; By design, the hardware configuration of the Grimage nodes is subject to changes:
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| - | * new generation of video (GPU) cards may be installed over time
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| - | * 10GE network connections may change
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| - | * ...
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| - | * JFS
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| - | ; Current 10GE network setup is as follows:
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| - | * One Myricom dual port card is installed on each of grimage-{4,5,7,8}
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| - | * One Intel dual port card is installed on each of grimage-{2,5,6,7}
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| - | Connexions are point to point (NIC to NIC, no switch) as follows:
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| - | * Myricom: grimage-7 <-> grimage-8 <-> grimage-4 <-> grimage-5
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| - | * Intel: grimage-2 <=> grimage-5 et grimage-6 <=> grimage-7 (double links)
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| - | == How to experiment ==
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| - | The default system of the grimage node is design to operate the Grimage VR room.
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| - | Using kadeploy is required to adapt the system to other needs (if the default system is not sufficient).
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| - | === Privileged commands ===
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| - | Currently, the following commands can be run via sudo in exclusive jobs:
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| - | * sudo /usr/bin/whoami (provided for testing the mechanism, should return "root")
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| - | * sudo /sbin/reboot
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| - | * sudo /usr/bin/schedtool
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| - | * sudo /usr/bin/nvidia-smi
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| - | encore un test
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| - | === What is x2x and how to use it ===
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| - | This tip is useful for people that have to work in the Grimage room, with a screen attached to a Grimage machine.
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| - | x2x allows to control the mouse pointer and keyboard input of a remote machine over the network (X11 protocol).
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| - | In the case of the Grimage nodes which have a screen attached, it is very practical because it allows to not use the USB mouse and keyboard, which are sometime buggy (because of the out of norm USB cable extension).
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| - | To use x2x:
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| - | # login locally on the machine (gdm)
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| - | # run <code class="command">xhost +</code> to allow remote X connections.
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| - | # from you workstation: run
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| - | ssh pneyron@grimage-1.grenoble.g5k -X x2x -to grimage-1:0 -west
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| - | ; NB
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| - | * replace pneyron by your username
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| - | * replace the 2 occurences of grimage-1 by the name of the Grimage node you actually use.
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| - | * make sure you get the ssh configuration to get the *.g5k trick to work (see the tip above)
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| - | test test
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| - | re test
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| - | == System changelog ==
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| - | a remplir
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| - | JFS
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